Stuff-regulator for paper-making machines.



J. BISHOP,

STUFF REGULATOR FOR PAPER MAKING MACHINES.

APPLICATION FILED DEC. 3|, I915.

1, 181 ,726.' Patented May 2, 1916.

MIMI iml- - A MED STATES PATENT OFFICE.

JAMES BISHOP, F CABTHAGE, NEW YORK,

STUFF-BEGUL ATOB- FOR PAPER-MAKING MACHINES.

Specification of Letters Patent.

I Patented May 2, 1916.

Regulators for Paper-Making Machines, of

which the following is a full and clear specification.

The object of this invention is to provide simple means for so regulating the flow of lset forth ,In the drawings the stuff to the paper making machine that the aper will have a uniform weight and thic ess and the principal fea ure of my invention is that I utilize the "density and themovementor flow of the pulp to bring about this result, as more fully hereinafter viewof an apparatus embodying my invent1on; F1g. 2 is a' detail vertical sectional view showmg more clearly the manner of adjust- I the paddle.

the drawing, 5 represents the usual large chest or tank into which the stock is delivered afterit comes from the beater and- 6 designates a comparatively small box or tank which the stock is delivered from said tank 5 by means of 'pipe line 7 and a suitable pump 8. The stock enters the bottom of the box 6 at one side of a partition '9 extending from one 'end wall of the box for about twothirds the length of the box. The stock enters the closed end'of one of the channels formed by the partition 9 andflows up over the upper edge of a dam 10 and thence around the end'of the partition 9, over the upper edge of the dam 11 and thence back to the large tank 5 through a pipe line 12. From the box or small tank 6, the stuff is delivered to the paper making machine in the usual manner through a regulable gate 13, the level of the stock in the box6 being determined by the height of the partition or dam 11, as is obvious. s

Journaled on the upper edge of the box or tank 6 is a rock shaft 14 which carrles'a counter-weight 15 and a depending paddle 16, this paddle being so located on the shaft thatit depends into the stream of pulp at a point between the dam 10 and the forward end of the partition 9, so that flow of the pulp will tend to rock shaft 14 in opposition to the tendency of the counter-weight '15. The paddle or plate 16 is fastened,to the shaft by bolt and slot connections, as shown,

Figure 1 is a perspective so as to be vertically-adjustable on the shaft, whereby the depth to which the lower end of the paddle extends into the stream of pulp may be varied.

Attached to the shaft 14 is a fork 17 which embraces a depending flexible hose 18 so as to laterally swing the depending end of this hos when shaft 14 is rocked. The upper end of the hose is connected to a water supply pipe 19 which is provided with a suitable valve 20. The lower end of the hose terminates just above the .upper edge of a thin partition 21 in a small box 22', afiixed to one side of the box 6. From one of the compartments formed by the partition 21 extends a waste pipe 23 and from the other (the rear) pocket or cup extends a water pipe 24 whose other end 1s connected to the ulp-delivery pipe 7 at a point between the pump and the'tank 5.

It .will be observed that the flow of the pulp tends to swing the lowerend of the paddle 16 toward the gate 13 in opposition to the counter-Wei ht 15, and it will be specially noted t t the thicker the pulp stock is the greater will be the pressure against the plate. It will be understood that a constant stream of water is being delivered down through hose 18 into one or the other or both of the compartments connected with pipes 23 and 24. The parts will be so proportioned and the, depth of the paddle will be so regulated with respect to the weight of the counter-weight that when the pulp thickens beyond a predetermined degree the effect of the paddle will be to swingits lower end nearer to the gate and thus swing the lower end of the water hose 18 backwardly so as to deliver more water into the compartment connected with pipe 24, whence it will be sucked into the delivery pipe 7 and be pumped up with the pulp into the box 6, thereby thinning the stock. As soon as the stock thins down tothe desired degree, the pressure "against the paddle 16 will be relieved and it will swing back to normal position, in which position the hose 18 will, in most cases, be arranged to deliver its entire supply into the compartment con- -nected with pipe 23. It will be seen that at times the abnormal thickness of the pulp stock will not be suflicient to throw the pipe '18 entirely across the partition 21, so that partition and part into the other; in other words, it will be seen that when the parts are properly adjusted and proportioned, the stock will be thinned out to a degree that is necessary to produce the paper of the predetermined thickness and wei ht. j

It will be observed that a eature of importance lies in having the paddle vertically adjustable on the rock shaft, so that itmay be readily adjusted to the diiferent' kinds of work. Another feature of importance is the connecting of the diluting pipe 24 to the pulp-transfer pipe 7 at a point between the pump andthe tank 5, whereby the pump will serve to thoroughly mix the water with a}: pulp before it reaches the regulating X. a It will be observed that my invention is not confined to the specific features-of construction herein shown and described, but various changes may obviously be made Without departing from the spirit of the invention as covered by the claims appended; for instance, it will be obvious that other means might be employed for utilizing the rocking of the shaft'to regulate the amount of water delivered topipe 24, as, for instance, the rock shaft might be arranged to operate a stop cock in a suitable supply pipe which, by the rotation of its plug,

would govern the flow of water to the pump inlet. With this stop cock device, the waste pipe would be done away with, as is obvious. Having thus described my invention, what I claim is:

1. In an apparatus of the class set forth, means for supplying a stream of 7 mi) to a a aper making machine, means f dr introucing a stream of water into the pulp on 40 its way to the paper making machine for the purpose of thinning or diluting it, and

devices controlled by variations in the density and lateral movement of the pulp to the paper machine for varying the quantity of water thus introduced, said devices embodying a laterally movable member immersed in the stream .of pulp and adapted by its varying lateral movements to vary the quantity of water introduced.

2. In an apparatus of the class set forth,

means for supplying astream of pulp to a and means for'causing the paddle member o normally swing against the current of p P- 3. In an apparatusv of the class set'forth, means for supplying a stream of pulp to a paper making machine, means. foriintro ducing a stream of water into the pulp on its way to the paper making machine for the purpose of thinning or diluting it, and

devices controlled by the density and movement of the pulp to the paper,machine for varying the quantity of water; thiis intro-'- duced, said devices embodying a rock-shaft,

a paddle member attached thereto: andarranged to depend into the stream of pulp,

and means for, causing the paddle'member to normally swing against the current of pulp, said paddle member being adjustable verticall r so as to vary the area of surface prcsente to the stream of pulp.

4. In an apparatus of the class set forth,

a stuff chest, a stufi box, means for delivering the stuff from the chest to the box embodying a conduit and a, pump, and means for introducing a stream of water into the,

conduit between the pump and thechest, so that the water will be mingled with the pulp as it' is pumped into the -box, and means controlled by the variations in the density and lateral flow of the pulp in the box for varying the quantityof water introduced, means being provided for delivering the stuff from the box to the paper-making niachine.

In testimony whereof I hereunto aflix my signature.

JAMES BISHOP. Witnesses:

WILLIAM J. HEATH,

-Czar-roan DAwLnr. 

